Noel Coward's Private Lives is a witty comedy, enjoyable because of the sharp dialogue and farcical story-line. Of course, it's all very light-hearted and 1930s-ish, but there's nothing wrong with that.
MTC's production has great sets making full use of the revolving stage. It includes a little music and singing. The different personalities of each the characters shine through - as do the traits that (it turns out) they share!